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by ejolson
Thu Feb 21, 2019 7:06 pm
Forum: General discussion
Topic: How to set up pi zero w without any router so I can see and control it from an ipad.
Replies: 6
Views: 217

Re: How to set up pi zero w without any router so I can see and control it from an ipad.

mr16k wrote:
Thu Feb 21, 2019 6:27 pm
OK,
Found a much simpler solution.
I Simply setup my Ipad as a personal hotspot.
The IPAD VNC then locates the Pi zero without any other codr needing to be written.

cheers

Peter
That's a great idea! Thanks for following up with that solution.
by ejolson
Wed Feb 20, 2019 6:34 pm
Forum: Advanced users
Topic: Cluster through wifi instead of ethernet?
Replies: 4
Views: 111

Re: Cluster through wifi instead of ethernet?

Does the raspberry pi 3 a+ support cluster also through wifi pair? I wonder. I got two so I may as well get them to work together. :) Definitely. From an applications level TCP/IP networking over WiFi is exactly the same as over twisted pair. Latency will be higher and bandwidth lower. Depending on...
by ejolson
Wed Feb 20, 2019 5:58 am
Forum: C/C++
Topic: Script to download and install new GCC
Replies: 37
Views: 5971

Re: Script to download and install new GCC

Thats plenty of space. This is on fresh install Raspbian, do I need to install some packages before starting the script ? No, it has always worked fine for me on a fresh Rasbian Lite install (that's when I normally run it). The other resource it needs of course is memory and the script automaticall...
by ejolson
Wed Feb 20, 2019 3:49 am
Forum: Off topic discussion
Topic: Is ARM doomed?
Replies: 60
Views: 1327

Re: Is ARM doomed?

I don't know how apple phones work. If like Android then most stuff is Java and could work on another platform without changes. I'm probably wrong ;-) Apple are certainly smart enough to avoid java. Who would have known Java would be an Oracle product when Google adopted it for Android? Except for ...
by ejolson
Mon Feb 18, 2019 8:37 pm
Forum: Networking and servers
Topic: High performance remote connection to a windows 10 machine
Replies: 10
Views: 281

Re: High performance remote connection to a windows 10 machine

Since you are using RDP then xfreerdp may be a faster choice. It would be reasonable to post the output of iperf3 here if you are uncertain how to interpret it. Note that the direction from Windows to the Pi is most important. Windows as the client: Transfer: 213 MBytes Bandwidth: 180 Mbits/sec A s...
by ejolson
Mon Feb 18, 2019 7:05 pm
Forum: Off topic discussion
Topic: Why Avoid BASIC on RPi?
Replies: 1377
Views: 52454

Re: Why Avoid BASIC on RPi?

Ah, sorry, I was busy avoiding something else for a change... It's nice to see there is someone else in the world crazy enough to do this. One thing I learned from that link is that we are using Gauss' trick for complex multiplication algorithm. I had not really spotted that, even though I used it ...
by ejolson
Mon Feb 18, 2019 4:28 am
Forum: The MagPi
Topic: Surprised to see you promoting W10
Replies: 11
Views: 396

Re: Surprised to see you promoting W10

You could probably also get Windows 10 ARM working by using u-boot which can emulate UEFI, but I haven't tried this. I haven't even tried using Windows 10 on the Pi, because I just don't have the patience to wait a couple of minutes just for the most basic of programs to load. Unless Windows 10 for...
by ejolson
Sun Feb 17, 2019 9:49 pm
Forum: Advanced users
Topic: Which Rasp for "pro" project?
Replies: 13
Views: 332

Re: Which Rasp for "pro" project?

My question is: everybody can easily "stole" the program and all the system on a sd-card, it's more difficult on a flash memory soldered on a board... no? How can I protect it? This question comes up regularly on this forum. Generally the goal is to discourage copying by nontechnical users and this...
by ejolson
Sun Feb 17, 2019 7:20 pm
Forum: Networking and servers
Topic: High performance remote connection to a windows 10 machine
Replies: 10
Views: 281

Re: High performance remote connection to a windows 10 machine

I have flashed Raspbian and installed Remmina with the rdp plugin, and it is working. I can access any computer and work remotely. Since you are using RDP then xfreerdp may be a faster choice. To test your network connection try testing with iperf3: First from Windows to the Pi; then from the Pi to...
by ejolson
Sat Feb 16, 2019 9:10 pm
Forum: Off topic discussion
Topic: Finally found out why SD cards were so unreliable on early Pi
Replies: 6
Views: 341

Re: Finally found out why SD cards were so unreliable on early Pi

In the early days I used to have a lot of trouble with SD card corruption on the Pi. Requiring a reinstall. Recently, nothing like so much. I often suspected there was some kernel problem back in that day but nobody ever hinted what that might have been. Now, I think I found it. A problem identifie...
by ejolson
Sat Feb 16, 2019 8:34 pm
Forum: Off topic discussion
Topic: Should the Pi Forum switch to Discourse?
Replies: 24
Views: 739

Re: Should the Pi Forum switch to Discourse?

The forum server is a purpose built dedicated machine, quad or eight core, cannot remember which, with I think 16GB RAM and a very fast net connection. It was brand new just before Xmas, so state of the art. Wow! That sounds like a pretty neat system. (And yet, there are still performance issues?) ...
by ejolson
Sat Feb 16, 2019 8:21 pm
Forum: Raspbian
Topic: Why is the Raspbian desktop experience so slow?
Replies: 26
Views: 850

Re: Why is the Raspbian desktop experience so slow?

But actually it doesn't exist and I am almost sure the Foundantion and the raspbian team are not planning (or are they? :o ) to develop a browser for Pi. It would be a really nice solution, but actually our best bet as users still Chromium, such a hated and loved blue elephant. Making this forum, c...
by ejolson
Fri Feb 15, 2019 11:17 pm
Forum: Raspbian
Topic: Why is the Raspbian desktop experience so slow?
Replies: 26
Views: 850

Re: Why is the Raspbian desktop experience so slow?

>Critisism of Pi development process from people who don't know what we've been doing or what we have achieved. As a customer of the Pi I don't need to know the ins and outs of what you've done (although I do appreciate your work). What I do see though is the result. The result is that the Pi as a ...
by ejolson
Fri Feb 15, 2019 8:08 pm
Forum: Off topic discussion
Topic: Why Avoid BASIC on RPi?
Replies: 1377
Views: 52454

Re: Why Avoid BASIC on RPi?

try to keep up It seems I will need to do some studying to make an object-oriented operator-overloaded parallel coarray Fortran 2018 version of the Fibonacci code. I wonder how expressive that will be or whether it would have been better not to avoid BASIC. If one of the 50,000 views of this thread...
by ejolson
Fri Feb 15, 2019 4:54 pm
Forum: Off topic discussion
Topic: Should the Pi Forum switch to Discourse?
Replies: 24
Views: 739

Re: Should the Pi Forum switch to Discourse?

1.5M posts may not be that many, but it's bringing PHPBB to its knees. We are doing work to speed up the forum by passing off searches etc to a separate system. If that doesn't pan out, then we may well have to migrate. Discourse has been mentioned as an alternative, and I took a look at some examp...
by ejolson
Fri Feb 15, 2019 4:09 am
Forum: Off topic discussion
Topic: Should the Pi Forum switch to Discourse?
Replies: 24
Views: 739

Re: Should the Pi Forum switch to Discourse?

No. Discourse is a marketing/customer support product designed for things like call avoidance and community engagement. I don’t think it fits here. The difficulty in migrating 1348612 posts and the negative consequences of not doing so makes switching ill advised even if the new system were not wor...
by ejolson
Thu Feb 14, 2019 4:33 pm
Forum: General programming discussion
Topic: Virtual machine for cross compiling
Replies: 5
Views: 169

Re: Virtual machine for cross compiling

Hi all! I always compiling on the raspberry pi, but now, I need create a virtual machine for setting up a cross compiling for rapsberry pi. While one of the goals of the Raspberry Pi is to be a computer that can be used for developing and compiling software, setting up a cross compiler to avoid the...
by ejolson
Thu Feb 14, 2019 6:22 am
Forum: General discussion
Topic: Powering RPi inside of PC case
Replies: 17
Views: 854

Re: Powering RPi inside of PC case

i would mount the pi on a piece of wood that slides into an empty harddrive slot. the nuts on db25 and de9 connectors make a good standoff with 4-40 bolts. re power i tend to run 5v and ground into the gpio connector using a 10-pin header at pos-1 . for simple projects this gets me i2c and tx/rx wh...
by ejolson
Wed Feb 13, 2019 10:48 pm
Forum: Off topic discussion
Topic: Order a special request Raspberry Pi :?:
Replies: 68
Views: 1522

Re: Order a special request Raspberry Pi :?:

My local ebay finds 112 PC's for less that $51.01 https://www.ebay.com.au/b/Tower-PC-Desktops/179/bn_36842772?rt=nc&_udlo=0&_udhi=51 Surely you can do similar? How many of those have 32GB RAM memory? To run four different AI programs it would be cheaper to use four different Raspberry Pi computers ...
by ejolson
Wed Feb 13, 2019 9:56 am
Forum: Advanced users
Topic: How to get an thernet connection between pi zero and pi3 over usb
Replies: 6
Views: 167

Re: How to get an thernet connection between pi zero and pi3 over usb

How do I then get the Ethernet connection to work I can see the pizero on the USB port but I cannot ping or connect to the device A step by step example of connecting five Pi Zero computers through USB to a Pi B+ computer is here . This approach uses rpiboot to boot the Zero computers so they don't...
by ejolson
Wed Feb 13, 2019 12:13 am
Forum: General discussion
Topic: Pi to Pi python communication
Replies: 10
Views: 249

Re: Pi to Pi python communication

I followed this example and it works great: https://www.baldengineer.com/mqtt-tutorial.html When people talk about communicating between Pi computers on separate WiFi networks by sending messages to an MQTT message broker running in the cloud and then write but eventually, we need to look at adding...
by ejolson
Tue Feb 12, 2019 4:26 pm
Forum: Advanced users
Topic: systemd requires 16mb of free space to reload daemons
Replies: 5
Views: 197

Re: systemd requires 16mb of free space to reload daemons

Hi, thanks, for the suggestion. i found the problem. systemd stores its log/journal in the /run directory instead of log.... and it was 19MB after 14 hours. so i just run a chronjob to delete the file every hour. maybe i configure systemd to throw away logs/logrotate if that is possible at all. It'...
by ejolson
Tue Feb 12, 2019 3:57 pm
Forum: Off topic discussion
Topic: Why Avoid BASIC on RPi?
Replies: 1377
Views: 52454

Re: Why Avoid BASIC on RPi?

While APL led to A and then the A+ programming language, BCPL led to B, C and then the D programming language. As a teacher I asked myself, what in the grading scale comes after D? CPL (Combined Programming Language) led to BCPL (Basic CPL). They called the first successor to C, C++ to avoid the ch...
by ejolson
Tue Feb 12, 2019 6:02 am
Forum: Off topic discussion
Topic: Why Avoid BASIC on RPi?
Replies: 1377
Views: 52454

Re: Why Avoid BASIC on RPi?

Gavinmc42, Was there a D based Fibo code? Yes, I posted it here yesterday While APL led to A and then the A+ programming language, BCPL led to B, C and then the D programming language. As a teacher I asked myself, what in the grading scale comes after D? In order to avoid a Fortran Fibonacci code, ...
by ejolson
Tue Feb 12, 2019 5:16 am
Forum: Networking and servers
Topic: Wait, Amiga on a PI?
Replies: 2
Views: 136

Re: Wait, Amiga on a PI?

If you get fed up ‘playing’ with software you could try this case https://www.thingiverse.com/thing:711938 though I’m going old school https://commodorepetmini.com My experience has been that software emulation of old hardware can be so realistic that it becomes possible to suspend reality and imag...

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